Wilhelm loeenz



(No Model.)

v W. LORENZ.

CARTRIDGB CASE.

No. 293,267. Patented Feb. 12. 1884.

N. PETERS. Photolhcgmphum Wa-hi mmmmmm c.

vrrnn 8rarns Parnnr irrce \VILHELM LORENZ, OF GARLSRUHE, BADEN, GERMANY.

-CARTRIDGE-CASE.

SPECFICATION forming part of Letters Patent No. 293,257, dated February12, 1884.

Application filed May 21, 1883. (No model.) Patente-d in Germany March19, 1882, No.

27, 1882, l\o. 149,236; in Belgium July 1, 1882, No, 58,359; in EnglandJuly 3, 1582,

i"0 all whom, it may concern:

Be it known that I, WILHELM Lonnnz, of the city of Carlsruhe, in theGrand Duehy of Baden, in the Empire of Germany, have invented certainnew and useful Improvements in Cartridge-Cases, of which the followingis a specification.

I have devised a cartridge-case in two thicknesses, the outcrmost beingseparable from the innermost and allowed to remain in the cartridge-chamber of the gun, the inner case being withdrawn after thefiring. One such double-case cartridge may serve for a long period, theouter shell or portion thereof re maining in the gun, and allowng theuse of a great number of metalcase eartridges to be used, beingintroduced in succession within the shell or outer portion of the firstcartridge as it remains fast in the gun. When it is desirecl to useordinary pasteboard cartridges again,the outer shell of the firstcartridge may be removed by the fingers or by any suitable instrument.

For sporting firearms of all descriptions, in particular for Lancasterand Lefaucheux guns, paper or pasteboard cartridge-casos haveheretoiorebeen mostly used, for the reason that while the outer diameter of metalcartridgecases were made to correspond with the car tridge-chamber ofthe gun and with the outer diameter of the pastelooard cases, the innerdiameter of the metal case was too large, on account of the lessthickness of the metal cases. Thus the metal cases contained a greaterquantity of powder and shot, and required larger closing-plugs at thefront of the cases than the pasteboard cases, and the movement of suchlarge plugs or wads into the smallr bore of the gun had a detrimentaleifect on the be havior of the gun, It is not expedient to use metalcases of the same thickness as the card board cases. Theseincouveniences are efiectually avoided by the present improved metalcartridgecase provided with an outer remov able metal jacket. The outerda1neter ofthis jacket corresponds accurately with the outer diameter ofthe corresponding pasteboard cartridge-oase and with the eartrdge seator chamber of the gun, while at the same time 19,677, and August 24,1882; in France May X0. 3,137, and in Austria-Ilungary October the innerdiameter of the metal case also corresponds with the inner diameter ofthe paste board case, thus insuring an equal charge of powder and anequal-sized plug and the ordi nary successful action on firing.

The accompanying drawings form a part of this specification, andrepresent what I consider the best means of carrying out the invention.

- Figure 1 is a side elevation, showing the improved cartridge with theinner shell and its contents partially drawn out from the outer shell.Fig. 2 is a corresponding front view. Fg. 3 is a longitudinal section,showing the cartridgecase in complete condition for use. Fig. 4 is halfof a corresponding front view. Fig. 5 is a complete front view. Fig. 6is a side view of the outer shell dctached. Fig. 7 is an end view of thesame. Figs. 8 and 9 show a modification. In the previous views the outershell as well as the inner is repre sented as drawn from a continuoustube. These Figs. 8 and 9 show the outer shell 'formed from apreviously-rolled piece of sheet metal, the meta-l having been earefullyrolled to the proper uniform thickness, cut by dies or otherwise, andbent around by hand or by machinery, and forming a complete cylinder,except that it is open for a narrow space extending the whole length.Fig. 8 is a side view, and Fig. 9 an end view.

Similar letters of reference indicate corresponding parts in all thefigures.

A is the inner shell, formed in all respects like an ordinary metalshell, but with a less external diameter than is required to fill thecartridge-chamber of the gun.

B is the outer jacket, having an external diameter just suflicient totightly match the cartrdge-chamber of the gun, and having an internaldiameter adapted to receive the inner shell and to support it.

In loading the Cartridge, the inner shell is held in any Ordinary orsuitable manner to receive the proper quantity of powder and shot, thecovering plug or wad (not represented) being applied and lightly securedin the ordinary manner. Then the outer shell, B, is applied.

In use, the entire cartrdge-case, including both the inner shell, A, andthe outer shell, B, are inserted in the c'artridge-chamber of the gun,strongly locked in any ordinary or suitable manner, and eitherimmediately or at anyperiod thereafter, when desired, the gun is firedin any ordinary or suitable manner.

I have indicated a percussioncap adapted to be fired by a smart blowfrom a firing-pin operated by the lock: of the gun, as will beunderst'ood. The straining due to the violent expansion of the powder iseffectually resisted by the thin inner shell, A, by reason of its beingsupported by the exterior surface of the outer shell or metal jacket, B.This outer shell orcasing, B, is also expanded against the walls of thecartridge-chamber, and -is thus held.in its desired position. withoutthe employment of an end flange, which I find interieres With the properseating of the cartridge and prevents a tight joint. The firstCartridge, having the outer shell, B, being properly positonedandexploded, the shell B is retained in the cartridge-chamber.

My improved cartridge-case can be used in guns adapted forpasteboardcases. In using these improved metal cases the outer Jacket,

B, remains in the chamber or cartridge-seat of. the gun after firing andwithdrawing the case, so that only the first cartridge used requires tohave the Jacket. If it be subsequently desired to shoot with pasteboardcarl tridges again, allthat is necessaryto prepare the gun isto simplydraw out theouter shell, B, instead of allowing it to remain therelonger. This arrangen1ent is applcable for all calibers of Lancaster,Lefaucheux, and analogous Sporting-guns.

I am aware of Patent No. 163,154, of 1875, in which the inner shell andhead are made separate, and in which the outer shell has a flange whichdoes not enter the Cartridgechamber of the gun, and such construction isnot sought to be covered in this application.

Having thus described the nature of my invention and in what manner thesame is to be performed, I claim' The compound cartridgecase described,having an inner shell, A, with its closed rear and flange, as usual, butwith a body of less thickness than is required to fill the cartridgechamber of the gun, in combination with an external removable shell, B,in the form of a plain cylinder, adapted for joint operation relativelyto each other and to a breech-load ing gun, substantially as hereinspecified.

In testimony whereof I have herento set my hand, at Berlin, this 13thday of March, 1883, in the presence' of two subscribing witnesses.

VILHELM LORENZ. \Vitnesses:

CARL GRONERT, B. R01.

